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There are no specific brands, however Verbatim are widely considered the best. Your, problem, however, is unlikely the brand of the media and more likely the recording speed of the media. Most blank DVD's on the market are 16x or faster and your machine (c. 2005) doesn't support anything faster than 4x. When I was reading the manual it referred to the "state of the art" 8x discs that the machine didn't have the ability to support. The discs you need are available and often are labeled as 2x - 4x meaning that they will support any drives that burn at a 2x - 4x spin rate. Also, be sure that you are not purchasing DVD+R and DVD+RW as they are not compatible with your unit.
Manual

It's possible there is either a codec problem with your computer player. I would recommend trying a player such as VLC Media Player, to see if that works. If that isn't it, what kind of TV's are you watching the video on? Are they "tubed" or flat screen? If they are tubed, you wouldn't be able to see the line at the bottom like you do when you play the video on the computer.